{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["engineering feature", "enabling technology", "manufacturing standard", "machanical property", "process characterization", "biomedical"], "input": "The influence of the addition of filler powder on the microstructure and properties of laser-welded Ti2AlNb joints was comparatively investigated using scanning electron microscopy , transmission electron microscopy , electron back scattered diffraction , and tensile tests ."}
{"engineering feature": [], "enabling technology": [], "manufacturing standard": [], "machanical property": [], "process characterization": ["scanning electron microscopy", "transmission electron microscopy", "diffraction", "tensile tests"], "biomedical": []}